GeForce GTX 965M vs Radeon HD 7970

Intro

Compare all of that to the Radeon HD 7970, which uses a 28 nm design. AMD has clocked the core speed at 925 MHz. The GDDR5 RAM works at a frequency of 1375 MHz on this specific card. It features 2048 SPUs as well as 128 TAUs and 32 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon HD 7970		8225 points
GeForce GTX 965M		5650 points
	Difference: 2575 (46%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 965M		60 Watts
Radeon HD 7970		250 Watts
	Difference: 190 Watts (317%)

Memory Bandwidth

In theory, the Radeon HD 7970 should be a lot faster than the GeForce GTX 965M overall. (explain)

Radeon HD 7970		264000 MB/sec
GeForce GTX 965M		64000 MB/sec
	Difference: 200000 (313%)

Texel Rate

The Radeon HD 7970 is a lot (more or less 96%) more effective at anisotropic filtering than the GeForce GTX 965M. (explain)

Radeon HD 7970		118400 Mtexels/sec
GeForce GTX 965M		60416 Mtexels/sec
	Difference: 57984 (96%)

Pixel Rate

The GeForce GTX 965M is a bit (more or less 2%) faster with regards to anti-aliasing than the Radeon HD 7970, and also capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 965M		30208 Mpixels/sec
Radeon HD 7970		29600 Mpixels/sec
	Difference: 608 (2%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in MB per second) that can be transported over the external memory interface in a second. The number is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.